Parabens are a class of widely used preservatives in cosmetic products. In a study, five out of six commercial products tested were found to contain preservatives such as methylparaben and benzethonium chloride.
Chemically, they are a series of parahydroxybenzoates or esters of parahydroxybenzoic acid. These compounds are used primarily for their bactericidal and fungicidal properties. And all commercially used parabens are synthetically produced.
Their efficacy as preservatives, in combination with their low cost probably explains why parabens are so commonplace, but assessment of the additive and cumulative risk of multiple paraben exposure from daily use of multiple cosmetic and personal care products is needed.
Les Risques du Paraben